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(🐞) Column marker in error message off for certain string errors #102312
Description
Activity
Reproduced in the CLI too:
>>> "\N{a}" File "<stdin>", line 1 "\N{a}" ^ SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 0-4: unknown Unicode character name
By the way, the interpreter hangs for around five seconds on first execution of
\N{a}with no delay on further attempts.Reacted by KotlinIsland@arhadthedev Am I missing something? I Can't see any caret in your repro.
@KotlinIsland Thank you, updated my initially undercopied output.
Reacted by KotlinIsland@benjaminp, @pablogsal (as parser experts)
update: @gvanrossum, @lysnikolaou (as new parser experts)
This is likely a duplicate of #102310.
Testing with Python 3.12.0a5+ (heads/main:0f89acf6cc, Feb 27 2023, 21:33:28), message is "incomplete input" and closing quote is marked. I interpret this as having been fixed already.
EDIT: the different message is because I initially ran in IDLE, which uses codeop, which usescompileslightly differently.
Get same messages in REPL compiled 2 hours ago and in installed 3.12.0a5 and installed 3.10.10.By the way, the interpreter hangs for around five seconds on first execution of
\N{a}with no delay on further attempts.Could that just be importing the (humongous) unicodedata module to resolve the name?
@terryjreedy What is it a duplicate of? Your link points to this same issue.
PS. If Benjamin is still listed as parser expert that's likely out of date.
- moved this to Waiting Done in CPython pull requests to have finally merged
on Feb 28, 2023 #102310, about same problem with b"Ā". Sorry about bad link (now fixed).
- moved this from Waiting Done to Done in CPython pull requests to have finally merged
on Feb 28, 2023 I don't think it's the same issue as #102310, in that issue the column marker is offset by a non ascii character, in this issue the marker appears after the string. While this issue does make an appearance in #102310, I do feel that they are distinct.
👉 $c:temp = "'\N{a}'" 👉 py temp File "C:\temp", line 1 '\N{a}' ^ 👉 $c:temp = "b'Ā'" 👉 py temp File "C:\temp", line 1 b'Ā' ^ 👉 $c:temp = "b'ĀĀĀĀĀĀĀĀ'" 👉 py temp File "C:\temp", line 1 b'ĀĀĀĀĀĀĀĀ' ^ SyntaxError: bytes can only contain ASCII literal characters SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 0-4: unknown Unicode character name
"\N{a}"Here the caret is pointing to blackspace after the code
Expected